4. Bearings
  5. Rotary bearing
  6. Roller drill bit

Frank J. Klima

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Drill bit with hard-faced bearing surfaces

Boring or penetrating the earth – Processes – Boring with specific fluid
Patent

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Rolling cutter drill bit with annular seal rings

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Patent

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Rotary drill bit ball plug

Bearings – Rotary bearing – Roller drill bit
Patent

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Rotary drill bit seal

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Patent

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Sealed hard-rock drill bit

Bearings – Rotary bearing – Roller drill bit
Patent

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Profile ID: LFUS-PAI-P-245242

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